| Abbreviation | Definition |
|---|---|
| TLMPB | Talisman Energy, Inc. Preferred B |
| TLS | Telstra, LTD. |
| TM | Toyota Motor Corporation |
| TMA | Thornburg Mortgage Asset Corporation |
| TMAPA | Thornburg Mortgage Asset Corporation Preferred A |
| TMB | Telemig Celular Participacoe |
| TMC | Times Mirror Company |
| TME | Times Mirror Company |
| TMK | Torchmark Corporation |
| TMKPM | Torchmark Capital, L. L. C. |
| TMM | Trans Maritima Mexicana, S. A. |
| TMMA | Trans Maritima Mexicana, S. A. |
| TMN | Transmedia Network, Inc. |
| TMNPA | Transmedia Network, Inc. Preferred A |
| TMO | Thermo Electron Corporation |
| TMR | The Meridian Resource Corporation |
| TMS | Thomson Multimedia |
| TMT | T C W / D W Term Trust 2003 |
| TMX | Telefonos de Mexico, S. A. |
| TNA | Terra Nova Bermuda Holdings, LTD. |